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Thermal: Add a notification API

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This patch adds a notification API which the sensor drivers'
can use to notify the framework. The framework then takes
care of the throttling according to the configured policy.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Durgadoss R 2012-09-18 11:05:05 +05:30 committed by Zhang Rui
parent 0c01ebbfd3
commit f2b4caafd4
2 changed files with 19 additions and 0 deletions
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18
drivers/thermal/thermal_sys.c
View File

@ -1368,6 +1368,24 @@ void thermal_cdev_update(struct thermal_cooling_device *cdev)
}
EXPORT_SYMBOL(thermal_cdev_update);
/**
* notify_thermal_framework - Sensor drivers use this API to notify framework
* @tz: thermal zone device
* @trip: indicates which trip point has been crossed
*
* This function handles the trip events from sensor drivers. It starts
* throttling the cooling devices according to the policy configured.
* For CRITICAL and HOT trip points, this notifies the respective drivers,
* and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
* The throttling policy is based on the configured platform data; if no
* platform data is provided, this uses the step_wise throttling policy.
*/
void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
{
handle_thermal_trip(tz, trip);
}
EXPORT_SYMBOL(notify_thermal_framework);
/**
* create_trip_attrs - create attributes for trip points
* @tz: the thermal zone device

1
include/linux/thermal.h
View File

@ -232,6 +232,7 @@ int get_tz_trend(struct thermal_zone_device *, int);
struct thermal_instance *get_thermal_instance(struct thermal_zone_device *,
struct thermal_cooling_device *, int);
void thermal_cdev_update(struct thermal_cooling_device *);
void notify_thermal_framework(struct thermal_zone_device *, int);
int thermal_register_governor(struct thermal_governor *);
void thermal_unregister_governor(struct thermal_governor *);